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Straight gears / ductively hardened / contact angle 20 degrees

Straight gears / ductively hardened / contact angle 20 degrees
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MISUMI

MISUMI

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Dimensional Drawing

Gear Shape
Shape A Shape B 
[NG] Tapped shaft bores are not available for Shape A
 
No surface treatment
[ ! ] End surface of Shape A may not be surface treated
as Shape A is made by cutting the hub of Shape B.
[ ! ] High-frequency hardening is applied to the tips of the teeth.
Shaft Bore Specifications (Selectable Gear Shapes)
Straight Bore (Shape A, Shape B)Straight Bore + Tap (Shape B)Keyway (Shape A)Keyway + Tap (Shape B)
[!] Relative positioning of keyway and teeth is not fixed.
　　Tooth surface accuracy Equivalent to the new JIS B 1702-1 Class 8
　　(Old JIS B 1702 Class 4)
 
Keyway Dimensional Tolerance
T Dim. Tolerance (H7)
NominalPH7
8 N to 10K+0.015
   0
11 N to 18 N+0.018
   0
19 N to 30 N+0.021
   0
31 N to 50 N+0.025
   0
[ ! ] Compliant with JIS B 0401-2.
Keyway Dimensional Tolerance
NominalbJS9t
8 N to 10 N3±0.01251.4+0.1
   0
10K to 12 N4±0.01501.8
13 N to 17 N52.3
18 N to 22 N62.8
23 N to 30 N8±0.01803.3+0.2
   0
31 N to 38 N10
39 N to 44 N12±0.0215
45 N to 50 N143.8
[ ! ] Compliant with JIS B 1301.
Unspecified Dimension Tolerance (Other than the teeth)
Dimension RangeTolerance
(mm)
Overor Less
0.53±0.1
36±0.1
630±0.2
30120±0.3
120400±0.5
[ ! ] Compliant with JIS B 0405 Class m (intermediate).

 

Type[M] Material[S] Surface Treatment[H] Hardness[A]Accessory
Straight BoreStraight Bore + TapKeyway, Keyway + Tap
GEAHBHGEABHGEAKBHEN 1.1191 Equiv.Black OxideTooth Induction Hardened
51 to 55HRC (Depth 1 mm or more)		Set Screw (Cup Point)
(EN 1.7220 Equiv. Black Oxide)
[ ! ] A set screw is not included for the shaft bore specification "Straight Bore."
[ ! ] A set screw is included for the shaft hole specification "Tapped."
Tapped Hole Dimensions
Shaft bore diameter
PH7		M
(Coarse)		Accessory
Set Screw
6 to 12M4M4 × 3
13 to 17M5M5 × 4
18 to 30M6M6 × 5
31 to 45M8M8 × 6
46 to 56M10M10 × 8

Specification Table

Part Number—Number of Teeth—B—Gear Shape—P
GEAKBH2.0
GEABH1.0		—
—		30
30		—
—		20
8		—
—		A
B		—
—		25 N
15
Part NumberNumber of TeethBGear
Shape		Shaft Bore Dia. PH7 (1 mm Increments)d
Reference Circle
Dia.		D
Addendum Circle
Dia.		G
Dedendum Circle
Dia.		HLℓ1ℓ2* 1 Allowable Transmission Force
(N⋅m)
Bending Strength
TypeModuleStraight Bore
Straight Bore + Tap		Keyway
Keyway + Tap
Straight Bore
(Shape A, Shape B)
GEAHBH

Straight Bore + Tap
(Shape B)
GEABH

Keyway
(Shape A)
Keyway + Tap
(Shape B)
GEAKBH		1.0188A

B		6 to 10—182015.515181054.76
206 to 118 N・10 N・10K202217.5175.57
228 to 148 N to 12 N・10K222419.5186.42
24242621.5207.27
25252722.57.69
26262823.58.12
28283025.59.02
3010 to 1710 N to 15 N
10K		303227.5259.87
32323429.510.79
35353732.512.13
36363833.512.52
4010 to 2110 N to 18 N
10K		404237.53013.07
45454742.515.18
48485045.516.44
5012 to 2412 N to 18 N505247.53517.23
6012 to 2812 N to 25 N606257.54021.50
70707267.525.74
8015 to 3515 N to 30 N808277.55029.98
10010010297.538.72
1.5151510 to 1210 N・10K22.525.518.75182914715.11
1610 to 1310 N・11 N・10K242720.2519.516.74
1810 to 1510 N to 13 N
10K		273023.252220.08
2010 to 1610 N to 14 N
10K		303326.252423.51
2412 to 1912 N to 17 N363932.252830.56
2512 to 2112 N to 18 N37.540.533.753032.39
2612 to 2212 N to 19 N394235.253231.16
2815 to 2515 N to 19 N424538.253634.58
3015 to 2615 N to 23 N454841.253837.84
3215 to 2815 N to 24 N485144.254041.03
3515 to 2915 N to 26 N52.555.548.754246.51
3615 to 3115 N to 28 N545750.254548.00
4015 to 3515 N to 31 N606356.255054.90
4518 to 3518 N to 31 N67.570.563.7563.90
48727568.2569.20
5018 to 4218 N to 38 N757871.256072.69
6020 to 4220 N to 38 N909386.2590.68
70105108101.25108.59
[!] Shaft bore diameter 6.35 is available for Straight Bore and Straight Bore + Tap. [NG] Shaft bore diameter 9N is not available for Keyway Bore + Tap.
[ ! ] Specify 10K as P dimension if keyway width of 4.0 mm (height 1.8 mm) for Keyway + Tap with shaft bore diameter of 10 is desired.
*1 Allowable Transmission Forces in the table are reference values calculated with prescribed conditions.
■Module 2.0, 2.5, 3.0
Part NumberNumber of TeethBGear
Shape		Shaft Bore Dia. PH7 (1 mm Increments)d
Reference Circle
Dia.		D
Addendum Circle
Dia.		G
Dedendum Circle
Dia.		HLℓ1ℓ2* 1 Allowable Transmission Force
(N⋅m)
Bending Strength
TypeModuleStraight Bore
Straight Bore + Tap		Keyway
Keyway + Tap
Straight Bore
(Shape A, Shape B)
GEAHBH

Straight Bore + Tap
(Shape B)
GEABH

Keyway
(Shape A)
Keyway + Tap
(Shape B)
GEAKBH		2.01520A

B		12 to 1712 N to 14 N303425243616835.81
1612 to 1812 N to 15 N3236272639.67
1812 to 2112 N to 18 N3640313047.59
2015 to 2215 N to 19 N4044353250.67
224448393658.24
2415 to 2615 N to 23 N4852433865.86
2515 to 2815 N to 24 N5054454069.81
2815 to 3115 N to 28 N5660514581.96
3018 to 3518 N to 31 N6064555089.70
3264685997.27
36727667113.78
4020 to 4220 N to 38 N80847560130.13
45909485151.46
489610091164.04
5025 to 4225 N to 38 N10010495172.31
6025 to 4525 N to 42 N12012411565205.60
2.5162515 to 2215 N to 19 N404533.75324318970.43
2018 to 2818 N to 24 N505543.754098.97
2418 to 3318 N to 30 N606553.7548128.63
2520 to 3520 N to 31 N62.567.556.2550136.34
2820 to 4220 N to 38 N707563.7560160.07
3020 to 4520 N to 42 N758068.7565175.19
3620 to 4920 N to 45 N909583.7570222.23
4025 to 4925 N to 45 N10010593.75254.16
4525 to 5225 N to 49 N112.5117.5106.2575295.82
48120125113.75306.46
5025 to 5625 N to 50 N125130118.7580321.92
3.0163016 to 2616 N to 23 N485440.538502010121.71
2020 to 3520 N to 31 N606652.550171.01
2420 to 4020 N to 37 N727864.558222.27
2520 to 4220 N to 38 N758167.560235.60
3025 to 5225 N to 49 N909682.575302.72
329610288.5328.27
3625 to 5625 N to 50 N108114100.580384.01
40120126112.5420.10
*1 Allowable Transmission Forces in the table are reference values calculated with prescribed conditions. [!]The "-" text in the above table means that it is not selectable.

Alterations

AlterationsSet Screw AlterationSide Through HoleSide Tapped Hole
CodeKC90KC120KFC·KTCQFC·QTC
Spec.Adds another set screw at 90° position.　
A set screw is added.
[NG] Not applicable to Straight Bore Type
 		Adds another set screw at 120° position.
A set screw is added.
[NG] Not applicable to Straight Bore Type
 		Machines through holes on the side surface.
(KFC, KTC: 1 mm Increments, K: 0.5 mm Increments)
[ ! ] Applicable only to Shape A [ ! ] P + K + 4 ≤ KFC (KTC) ≤ G - K - 4
Select K K3.0 to K6.0 Ordering Code KFC20 to K3.5		Machines tapped holes on the side surface of the gear. (QFC, QTC: 1 mm Increments)
[ ! ] Applicable only to Shape A [ ! ] P + M + 4 ≤ QFC (QTC) ≤ G - M - 4
Select M M3 M4 Ordering Code QFC25-M3
" ! " Tapped Hole Depth M × 1.5 (When B < M × 1.5, through)

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Part Number
GEABH1.0-18-8-B-[6,​6.35,​7,​8,​9,​10]
GEABH1.0-18-8-B-[6-10/1]
GEABH1.0-20-8-B-6.35
GEABH1.0-20-8-B-[6-11/1]
GEABH1.0-22-8-B-[8-14/1]
GEABH1.0-24-8-B-[8-14/1]
GEABH1.0-25-8-B-[8-14/1]
GEABH1.0-26-8-B-[8-14/1]
GEABH1.0-28-8-B-[8-14/1]
GEABH1.0-30-8-B-[10-17/1]
GEABH1.0-32-8-B-[10-17/1]
GEABH1.0-35-8-B-[10-17/1]
GEABH1.0-36-8-B-[10-17/1]
GEABH1.0-40-8-B-[10-21/1]
GEABH1.0-45-8-B-[10-21/1]
GEABH1.0-48-8-B-[10-21/1]
GEABH1.0-50-8-B-[12-24/1]
GEABH1.0-60-8-B-[12-28/1]
GEABH1.0-70-8-B-[12-28/1]
GEABH1.0-80-8-B-[15-35/1]
GEABH1.0-100-8-B-[15-35/1]
GEABH1.5-15-15-B-[10-12/1]
GEABH1.5-16-15-B-[10-13/1]
GEABH1.5-18-15-B-[10-15/1]
GEABH1.5-20-15-B-[10-16/1]
GEABH1.5-24-15-B-[12-19/1]
GEABH1.5-25-15-B-[12-21/1]
GEABH1.5-26-15-B-[12-22/1]
GEABH1.5-28-15-B-[15-25/1]
GEABH1.5-30-15-B-[15-26/1]
GEABH1.5-32-15-B-[15-28/1]
GEABH1.5-35-15-B-[15-29/1]
GEABH1.5-36-15-B-[15-31/1]
GEABH1.5-40-15-B-[15-35/1]
GEABH1.5-45-15-B-[18-35/1]
GEABH1.5-48-15-B-[18-35/1]
GEABH1.5-50-15-B-[18-42/1]
GEABH1.5-60-15-B-[20-42/1]
GEABH1.5-70-15-B-[20-42/1]
GEABH2.0-15-20-B-[12-17/1]
GEABH2.0-16-20-B-[12-18/1]
GEABH2.0-18-20-B-[12-21/1]
GEABH2.0-20-20-B-[15-22/1]
GEABH2.0-22-20-B-[15-22/1]
GEABH2.0-24-20-B-[15-26/1]
GEABH2.0-25-20-B-[15-28/1]
GEABH2.0-28-20-B-[15-31/1]
GEABH2.0-30-20-B-[18-35/1]
GEABH2.0-32-20-B-[18-35/1]
GEABH2.0-36-20-B-[18-35/1]
GEABH2.0-40-20-B-[20-42/1]
GEABH2.0-45-20-B-[20-42/1]
GEABH2.0-48-20-B-[20-42/1]
GEABH2.0-50-20-B-[25-42/1]
GEABH2.0-60-20-B-[25-45/1]
GEABH2.5-16-25-B-[15-22/1]
GEABH2.5-20-25-B-[18-28/1]
GEABH2.5-24-25-B-[18-33/1]
GEABH2.5-25-25-B-[20-35/1]
GEABH2.5-28-25-B-[20-42/1]
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSNumber of Teeth
(Teeth) 		Shape Shaft Bore Dia.
(Ø) 		Tooth Width B
(mm) 		Hole Shape

-

1 12 Days 1018Shape B6 ～ 108Round Hole + Tap

-

1 12 Days 1018Shape B6 ～ 108Round Hole + Tap

-

1 12 Days 1020Shape B6.358Round Hole + Tap

-

1 12 Days 1020Shape B6 ～ 118Round Hole + Tap

-

1 12 Days 1022Shape B8 ～ 148Round Hole + Tap

-

1 12 Days 1024Shape B8 ～ 148Round Hole + Tap

-

1 12 Days 1025Shape B8 ～ 148Round Hole + Tap

-

1 12 Days 1026Shape B8 ～ 148Round Hole + Tap

-

1 12 Days 1028Shape B8 ～ 148Round Hole + Tap

-

1 12 Days 1030Shape B10 ～ 178Round Hole + Tap

-

1 12 Days 1032Shape B10 ～ 178Round Hole + Tap

-

1 12 Days 1035Shape B10 ～ 178Round Hole + Tap

-

1 12 Days 1036Shape B10 ～ 178Round Hole + Tap

-

1 12 Days 1040Shape B10 ～ 218Round Hole + Tap

-

1 12 Days 1045Shape B10 ～ 218Round Hole + Tap

-

1 12 Days 1048Shape B10 ～ 218Round Hole + Tap

-

1 12 Days 1050Shape B12 ～ 248Round Hole + Tap

-

1 12 Days 1060Shape B12 ～ 288Round Hole + Tap

-

1 12 Days 1070Shape B12 ～ 288Round Hole + Tap

-

1 12 Days 1080Shape B15 ～ 358Round Hole + Tap

-

1 12 Days 10100Shape B15 ～ 358Round Hole + Tap

-

1 12 Days 1015Shape B10 ～ 1215Round Hole + Tap

-

1 12 Days 1016Shape B10 ～ 1315Round Hole + Tap

-

1 12 Days 1018Shape B10 ～ 1515Round Hole + Tap

-

1 12 Days 1020Shape B10 ～ 1615Round Hole + Tap

-

1 12 Days 1024Shape B12 ～ 1915Round Hole + Tap

-

1 12 Days 1025Shape B12 ～ 2115Round Hole + Tap

-

1 12 Days 1026Shape B12 ～ 2215Round Hole + Tap

-

1 12 Days 1028Shape B15 ～ 2515Round Hole + Tap

-

1 12 Days 1030Shape B15 ～ 2615Round Hole + Tap

-

1 12 Days 1032Shape B15 ～ 2815Round Hole + Tap

-

1 12 Days 1035Shape B15 ～ 2915Round Hole + Tap

-

1 12 Days 1036Shape B15 ～ 3115Round Hole + Tap

-

1 12 Days 1040Shape B15 ～ 3515Round Hole + Tap

-

1 12 Days 1045Shape B18 ～ 3515Round Hole + Tap

-

1 12 Days 1048Shape B18 ～ 3515Round Hole + Tap

-

1 12 Days 1050Shape B18 ～ 4215Round Hole + Tap

-

1 12 Days 1060Shape B20 ～ 4215Round Hole + Tap

-

1 12 Days 1070Shape B20 ～ 4215Round Hole + Tap

-

1 12 Days 1015Shape B12 ～ 1720Round Hole + Tap

-

1 12 Days 1016Shape B12 ～ 1820Round Hole + Tap

-

1 12 Days 1018Shape B12 ～ 2120Round Hole + Tap

-

1 12 Days 1020Shape B15 ～ 2220Round Hole + Tap

-

1 12 Days 1022Shape B15 ～ 2220Round Hole + Tap

-

1 12 Days 1024Shape B15 ～ 2620Round Hole + Tap

-

1 12 Days 1025Shape B15 ～ 2820Round Hole + Tap

-

1 12 Days 1028Shape B15 ～ 3120Round Hole + Tap

-

1 12 Days 1030Shape B18 ～ 3520Round Hole + Tap

-

1 12 Days 1032Shape B18 ～ 3520Round Hole + Tap

-

1 12 Days 1036Shape B18 ～ 3520Round Hole + Tap

-

1 12 Days 1040Shape B20 ～ 4220Round Hole + Tap

-

1 12 Days 1045Shape B20 ～ 4220Round Hole + Tap

-

1 12 Days 1048Shape B20 ～ 4220Round Hole + Tap

-

1 12 Days 1050Shape B25 ～ 4220Round Hole + Tap

-

1 12 Days 1060Shape B25 ～ 4520Round Hole + Tap

-

1 12 Days 1016Shape B15 ～ 2225Round Hole + Tap

-

1 12 Days 1020Shape B18 ～ 2825Round Hole + Tap

-

1 12 Days 1024Shape B18 ～ 3325Round Hole + Tap

-

1 12 Days 1025Shape B20 ～ 3525Round Hole + Tap

-

1 12 Days 1028Shape B20 ～ 4225Round Hole + Tap

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General Information - Spur Gears

Spur gears - front gear with through hole - spur gear with spring pin - spur gear made of brass - brass pinion - plastic - spur gear with ball bearing

 

Selection details of spur gears

- Material: steel, stainless steel, sintered steel, nylon, polyacetal, brass, aluminum, cast iron

- Coatings: burnished, nickel-plated

- Heat treatment: induction hardened

- Shaft diameter tolerances: H7, H8

- Tooth flank clearance: N5, N7, N8, N9, N12

- Module: 0.3, 0.5, 0.75, 0.8, 1, 1.25, 1.5, 2, 2.5, 3, 4, 4.5, 5, 6, 8, 10, 15, 20

- Pressure angle: 20°

- Shaft diameter: 2 mm to 50 mm

- Number of teeth: 8 to 200

- Tooth width: 2 mm to 90 mm

 

Description/Basics

The spur gears offered are generally machine elements that serve the non-slip transmission of force, movement transmission or movement change. The teeth of the cylinder wheels grip each other during transmission and largely roll over the tooth flanks. The tooth shape of the spur gear is convexly shaped in the shaped tooth system. At the beginning of the intervention, a rolling resistance acts on the tooth flank, which becomes a sliding friction in the course of the rotation.

A combination of gear wheels and rack gears is useful in the construction of rack gear. This allows motor rotary motion or other rotary motion to be converted into linear motion. rack gear boxes are theoretically possible in an endless assembly. Limits here only set the length of the rack gears for the rack gear drive.

Gear wheels with straight gearing are particularly suitable for the construction of gearboxes. The advantage of straight gearing as opposed to helical gears, is the possibility of transmitting a higher torque. It should be noted that with increasing speed within the transmission ratio or reduction, the torque to be transmitted decreases.

When designing spur gear pairs, the ratio of the gear ratio (number of teeth) and the module of the respective gear wheels must be observed.
The backlash is another important factor that must be considered during construction. Reverse play is understood as the result of the play that the change in the direction of rotation of a single gear wheel pair between the teeth. The risk of reverse play can be reduced if either the diameter or the number of teeth of the cogwheel pairing do not deviate too much from one another. If high wear is to be expected due to the pairing of gears, the MISUMI online shop offers gears with a hardened key-type.

For applications with the same rotational direction, it is possible to use an intermediate gear with integrated bearing on a cantilever shaft. The bearing number used can be found under the tab More Information. An overview of tolerances and permissible radial bearing deviations can be found in the following PDF.

In addition to gear wheels, MISUMI also offers suitable rotary shafts for the construction of a transmission. The straight front wheels can be assembled on these and secured with a set screw or machine keys (key with adjusting screw). This PDF provides an overview of the configurable mountings for the shaft rotation and keyway tolerances.
The continuous adjusting of a spur gear can be realized, among other things, by means of a clamping sleeve. The MISUMI online shop offers spur gears with clamping sleeve. Alternatively, we also offer individual keyless bushing that you can customize to your needs.

 

Application Examples - Spur Gears

Application example: workpiece transport - spur gear - rack gear - roller bearings - workpiece

Application example - spur gear with rack gear
(1) Spur gear, (2) Clamping knobs, (3) Rack gear

Application example: rack gear - spur gear with rack gear - handle - rotary handle

Application example - spur gear
(1) Spur gear, (2) Workpiece, (3) Rollers

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry
 

Basic information

Material (Details) General Steel Material Surface Treatment Black Oxide Ground Tooth Provided
Backlash Provided Precision(Old JIS) JIS B 1702 (Class 2)

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Basic Attributes

  • Number of Teeth(Teeth)

    • 15
    • 16
    • 18
    • 20
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 32
    • 35
    • 36
    • 40
    • 45
    • 48
    • 50
    • 60
    • 70
    • 80
    • 100

    Clear

  • Shape

    • Shape A
    • Shape B

    Clear

  • Shaft Bore Dia.(Ø)

    • 6
    • 6.35
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50

     [6-56/1Ø Unit(s)]

    Clear

  • Tooth Width B(mm)

    • 8
    • 15
    • 20
    • 25
    • 30

    Clear

  • Hole Shape

    • Keyway
    • Keyway Hole + Tap
    • Round Hole
    • Round Hole + Tap

    Clear

  • Type

    • GEABH
    • GEAHBH
    • GEAKBH

    Clear

  • Filter by CAD data type

    • 2D
    • 3D

    Clear

Filter by standard shipping days

    • All
    • 12 Days or Less

    Reset

Optional Attributes

Frequently Asked Questions (FAQ)

Question:

Can different modules be combined with each other?
Answer:

Since the module describes the division of the teeth along the pitch circle diameter, various modules cannot be combined into one pair of gears.
Question:

What is involute gearing?
Answer:

Evolved gearing is understood to be the convex production of a tooth flank. The sliding friction along the tooth flank can thus be minimized. This also reduces wear and tear.
Question:

What is the pressure angle?
Answer:

The pressure angle is defined as the angle of the highest drive force between two gears. A combination of different pressure angles is not recommended, since increased wear is to be expected.
Question:

Is the position of the keyway to the key-type specified?
Answer:

The keyway has no specified position reference to the tooth base or the head surface of the sprocket.
Question:

What is the reverse clearance?
Answer:

The reverse play arises at the moment of the direction of rotation of a spur gear pairing is changed. It describes the gap between the gear flanks of each tooth in engagement.

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